The Moon is the planet of fecundation and therefore the most important significator; next comes Venus, the planet of love and attraction; and last, Jupiter, the planet of benevolence. If either of these planets is in the Fifth House, which indicates children, and in one of the fruitful or double-bodies signs, Cancer, Scorpio, Pisces, Gemini, or Sagittarius, it is an indication that the person has a fruitful nature and will have a number of children who will be of good and pleasant disposition. A similar judgment may be formed if the Eleventh House is thus invested. For if we turn the horoscope upside down so that the Seventh House becomes the First, then it will show the marriage partner's figure, and the Eleventh House is then his Fifth House indicating children, therefore both the Fifth and Eleventh Houses should be considered in this matter. But as already said, the true state of conditions cannot be forecasted save by blending the actual figures of both parents.
When the violent, turbulent Mars, or Saturn, famed in ancient mythology as a destroyer of children, or the Sun or Uranus, are in the Fifth or Eleventh Houses, they either prevent the birth of children or destroy them during childhood. This is particularly true if Aries, Leo or Capricorn are on the cusps of either of these Houses.
When the Moon is in Cancer, Scorpio, Pisces, Gemini, or Sagittarius, in good aspect to Jupiter or Venus, a large family is indicated.
But when the Moon is in Aries, Leo, or Capricorn, and afflicted by one of the malefics or by the Sun, the marriage is usually barren. Saturn and Venus in the Seventh House is also a sign of marriage without issue.
If there is a difference in the testimonies of the Fifth and Eleventh Houses the judgment must be modified accordingly.